EP 1122241 A1 20010808 - Process for the preparation of epsilon-caprolactam
Title (en)
Process for the preparation of epsilon-caprolactam
Title (de)
Verfahren zur Herstellung von epsilon-Caprolactam
Title (fr)
Procédé pour la préparation de epsilon-caprolactame
Publication
Application
Priority
EP 00200365 A 20000203
Abstract (en)
A process for the preparation of epsilon -caprolactam starting from 6-aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6-aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds, which process is performed in the presence of N-(5-carboxypentyl)- epsilon -caprolactam and/or derivative thereof in an amount of less than 50 wt.% and more than 0.1 wt.% (based on the total reaction mixture).
IPC 1-7
IPC 8 full level
C07D 223/10 (2006.01); C07D 201/08 (2006.01); C07D 201/12 (2006.01)
CPC (source: EP)
C07D 201/08 (2013.01); C07D 201/12 (2013.01)
Citation (search report)
- [YD] WO 9837063 A1 19980827 - DSM NV [NL], et al
- [Y] WO 9809944 A1 19980312 - DSM NV [NL], et al
- [Y] WO 9730974 A1 19970828 - DSM NV [NL], et al
- [Y] EP 0937712 A1 19990825 - DSM NV [NL], et al
- [Y] EP 0729943 A2 19960904 - DSM NV [NL], et al
- [A] US 5874575 A 19990223 - FUCHS EBERHARD [DE], et al
- [Y] US 5877314 A 19990302 - HERKES FRANK E [US], et al & WO 9835938 A1 19980820 - DSM NV [NL], et al
- [YD] US 5068398 A 19911126 - MERGER FRANZ [DE], et al
- [Y] US 5495014 A 19960227 - FUCHS EBERHARD [DE], et al
- [Y] DATABASE CAPLUS chemical abstracts; 1970, XP002141780 & JP S4522946 B1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1122241 A1 20010808; AT E249430 T1 20030915; AU 3779301 A 20010814; CA 2399220 A1 20010809; CN 1187324 C 20050202; CN 1419540 A 20030521; DE 60100746 D1 20031016; DE 60100746 T2 20040715; EP 1257532 A1 20021120; EP 1257532 B1 20030910; ES 2206408 T3 20040516; JP 2003521533 A 20030715; KR 100762055 B1 20071004; KR 20020073200 A 20020919; MY 122832 A 20060531
DOCDB simple family (application)
EP 00200365 A 20000203; AT 01910213 T 20010202; AU 3779301 A 20010202; CA 2399220 A 20010202; CN 01807240 A 20010202; DE 60100746 T 20010202; EP 01910213 A 20010202; ES 01910213 T 20010202; JP 2001556834 A 20010202; KR 20027010054 A 20020803; MY PI20010494 A 20010205